PUBLIC KEY DIVERSIFICATION METHOD - Patent 0400103

(19)

(11)

EP 0 400 103 A1

(12)

(43)	Date of publication:
	05.12.1990 Bulletin 1990/49

(21)	Application number: 89909280.0

(22)	Date of filing: 27.07.1989

(51)

International Patent Classification (IPC):

H04L 9/ 08^{( . )}

H04L 9/ 30^{( . )}

(86)	International application number:
	PCT/US1989/003253

(87)	International publication number:
	WO 1990/002456 (08.03.1990 Gazette 1990/06)

(84)	Designated Contracting States:
	CH DE FR GB LI NL

(30)

Priority:

19.08.1988 GB 19880019767
12.06.1989 US 19890364949

(71)	Applicant: NCR CORPORATION
	Dayton, OH 45479 (US)

(72)	Inventor:
	AUSTIN, Jeffrey, Reginald The White House Surrey GU26 6TD (GB)

(74)	Representative: Robinson, Robert George
	International Patent Department NCR Limited 915 High Road North Finchley London N12 8QJ London N12 8QJ (GB)

(54)	PUBLIC KEY DIVERSIFICATION METHOD